/Engine/Plugins/Runtime/DataRegistry/Source/DataRegistry/Public/DataRegistrySource_DataTable.h
Returns availability of individual item, also get raw memory address if available
virtual [EDataRegistryAvailability](API\Plugins\DataRegistry\EDataRegistryAvailability) GetItemAvailability ( const [FName](API\Runtime\Core\UObject\FName) & ResolvedName, const uint8 ** PrecachedDataPtr ) const